Time-controlling device for automatic flange oilers



C. F. HOOFER.

TIME CONTROLLING DEVICE FOR AUTOMATIC FLANGE OILERS. APPLICATION FILED APR. 7. 1920.

1,438,761. Patented Dec.12,1922.

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CHARLES ll. HOOIPER, 0F fiEATTLE, VJAfil-IINGTON.

Application filed April 7,

To aZZ whom it may concern:

Be it known that l, CHARLES F. Hoornn, a citizen of the United States of America,

and resident of the city of Seattle, county of King, and State of lVashington, have in vented certain new and useful improvements in lime-Controlling Devices for ril tomatic Flange Oilers, of which the following is a specification.

My invention relates to a device intended to control. the time during which a motive fluid, as air, will continue its action upon a mechanism after it has been applied by the action of some other mechanism. device thus acts as a delayed cut-0d for the air supply.

The object of my invention is to insure the application of air to a mechanism for a determined period after it has been applied thereto, in case where the applying means may act only momentarily.

The novel features of my invention upon which I desire patent protection will be first described and then particularly defined in the claims.

In the accompanying drawings l have shown my invention in the form of con struction which I have adopted for one particular use.

Figure 1 is a central vertical section taken lengthwise of the device or on the line 1-1 of Figure 6.

Figure 2 is a section on the line 2-2 of Figure l.

Figure 3 is a bottom face view of the plunger head.

.Figure 4 is a horizontal section on the plane of the line t-d of Figure 1.

Figure 5 is a view of the end of the device Which is at the left hand in Figures 1 and 4.

Figure 6 is a horizontal section taken on the line 6-6 of Figure 1.

Figure 7 is an end view and Figure 8 a perspective of the valve opening cam bar. My invention is illustrated. in the accompanying drawings, and will be hereinafter described, in the form of construction which has been designed for use with flange or rail oiling devices which are operated by air. The purpose of the device 1s to provide means whereby when the air supply valve has been once opened, it will be kept open not less than a certain minimum time, even though the opening means may sooner cease to act. It may thus be correctly called a l The 120. Serial No. 371,986.

delayedrlosing device. it is evident that it may be applied to other purposes than the p ticular one above mentioned, or wherever like conditions are found and it be desired to insure minimum ofthe supply valve. I

The device havingan outward extension 15 which supports a shaft bearing 16, and an adjustment screw 19. A corresponding shaft bearing 17 employed for and 21 respectively, each of which are provided at their meeting ends with inclined cam facets 2 (see Figures land i). The shaft 20 has a non-circular portion 24 upon which loosely mounted a lever 25.

An air pressure valve casing 26 is pro vi ded-wi'lth an open ended cylindrical extension 27 projecting into and secured to the casing let. A reciprocating piston 28 in the cylinder 27 is adapted to engage one end of the fulcrum lever 29 which is pivoted upon the pin uh spring 32 which is carried by the pin a. employcdto hold the various operativeparts in their normal position, as shown in lligures l and 6.

A reciprocating comiectingrod 34. forming a pair of parallel guides 35 and 35, and circular enlargement 36, hasone' end pivoted to the lever 29 and the other end pivoted to the-plunge head 37.

A non-circular portion 22 of the shaft 21 is mounted between the parallel guide members 85 and 35: A dashpot 38 open at its top end and secured to a corresponding openin the casing 14 is provided with reciprocating"plunger 37. A ball check valve 39, adapted to closeduring a downward movement, and a permanently open bypass or vent passage 40, provide means whereby a liquid may be passed through the piston 37. A deflector disk ll extends over the openings 39 and i.

The piston 28 is provided, atits lower end, with cup leather packing 30, above which a chamber orport, formed by reduc ing the diameter of a central portion of the piston 28, is in comn'iunication with the atmosphere through the vent 81. The pressure valve casing 26, is supplied with an inlet through a pipe 1-2 and discharges through the pipe 43. A valve 44 having radial guioe members a5 is normally held upon its seat by the spring d6 and the screw cap 47. A stem 18 having one of its ends bearing against the opposite side of the opening time is enclosed. within a casing 14' air ' ventionyhave not been illustrated and I the 1 dash-pot 38,

ponent parts, but can not complete pipe 4.8 and the cylinder 2? l igures l and 4) This is due to the fact that the shaft. 21 is, at the time, held against turning by the sides of the linlr 3e embracing the flat section 22.

The action of the device is initiated through the swinging of the lever 25. The manner of doing this and the means employed, "forming no part o'l my presentin- "will not be described.

Normally the casing l-l is held in an upright position with the dashpot BS charged with a liquid, preferably of an oily substance. to a depth well above the plunger head 37. Referring now to Figure 1, it becomes obvious that the shaft member 20 my be subjected to a rotative movement in either direction by means of the lever 25, while its co-member 21 having its non cin cular portion 22 between the guides 35 and may not be thus rotated, but is subjected to a reciprocalmovement when the relative positions of the inclined. facet ends 23 and 23" are moved out of alinement, thereby acting to displace the valve M from its seat,

through the shaft member 21 pressing against the stem d8.

This admits air to'the pipe 43, and also into the cylinder 27., pressing the piston 28 upward against the fulcrum lever 29, which in turn "forces the plunger 37 downward into against the resistance of the spring 32 and the liquid in the bottom 01" the dash-pot 38. The said liquid is for the purpose of producing a retarding action upon the plunger 3'? and to th at end, a small vent 4L0 is provided through which the liquid must pass, as the ball check valve 39 is closed during a downward movement of the same. I

When the downward movement of the plunger 37 is completed, the circular enlargement 36 registers with the non-circular portion 22 of the shaft 21 (see Figure 2), thus permitting shaft 21 to turn, whereupon the pressure between inclined facet ends 23 and 23 caused by spring l6, produces a turning eifect upon shaft 21 which permits seating of the facet ends and of the valve e4,

thereby cutting off fluid pressure from both cylinder 37 and pipe 43.

Nhen atmospheric pressure is again at tained below the piston 30 the-fulcrum spring 32 .immediately actuates a return movement of the plunger 37 its comthis shatt movement. until the non-circular portion 22 is rotated, through the swinging of the lever 25, into position for passing the parallel guides 85 and 35 over it, whereupon the movement is completed and the parts remain in their-uppermost position areparatory to the next operation.

It should be understood that the shaft member 20 may be so adjusted by means of the adjustment screw 19 that. the spring 46 will press the cam faces 23 and 23 into alinement with each other and engage them sufiiciently tovcause the shaft 20 to rotate the shaft 21 when the latter has its noncircular portion 22in register with the circular enlargement 36.

W hat l. claim. as my invention is:

l. in a pneumatically operated flange oiling device, the combination with meansiior applying the air, of means acting to cut oil the air supply at the end of a fixed time period, said cut-oil means acting indepen dently of the means by which the air is applied.

2, a pneumatically operated flange oil ing device, an air applying mechanism, an air operated cutoli means including a delaying mechanism and adapted to release the air applying mechanismat the end of a determined time period irrespective of the condition of the air applying mechanism.

3. In a pneumatically operated flange oil-' ing device, in combination, a means for applying the ope *ating air, a dash pot actu ated by the operating an and means for cutting oil the air controlled bv the dash pot.

in device, a means for automatically ap-.

p comprising an actuating couple consisting of two alined rotative members having abutting cam faces, one of said members being reciprocative and having a fiattened section, a dashfpot device actuated by the air when applied and having aside bearing against the flattened section-of the reciprocative member of the couple, and adapted toclear said reciprocative member toward the end of the stroke of the dash pot.

7. In a pneumatically operated device, an axially movable valve controlling the air actuating supply, rotative primary and secondary valve actuating members alined With the valve and having abutting cam faces, the secondary member being reciprocative to operate the valve, a dash pot device having engagement with the said secondary member to prevent turning thereof until the dash pot reaches a predetermined position. I

8. In a pneumatically operated device, a valve controlling the air supply, valve operating means comprising primary and secondary rotative members having abutting cam surfaces, the secondary member being also reoiprocative and nection with the valve, her having a flattened piston actuated by the airsupplied by the valve, a stem for said piston composed of two bars which span the flat section of the said secondary member and are bowed outsaid secondray memsection, a dash pot Wardly at a point to permit turning of said having actuative con ber being also reciprocative and having actu-i ative connection with the valve, said secondary member having a flattened section, a dash pot piston actuated by the air supplied by the valve, a stem for said piston composed of two bars which span the flat section of the said secondary member and are bowed outwardly atca point to permit turning of said secondary member when the piston nears the end of its stroke.

Signed at Chicago, Cook County, Illinois this 29th day of March 1920.

CHARLES F. HOOFER. 

